"No... I Don't!"

That's what you'll here all day around our house. Anything I ask of Matt, that is his response. I'll ask, "Hey Matt, do you want a snack?" "No... I don't!" "Matt, do you want to go play?" "No... I don't!" "Let's go take a bath!" "No... I don't!" It's so funny to me because I know he wants to do these things. He finds it a lot more entertaining to argue though. I just have to laugh. Why is it that when they turn 2, they have to become defiant and argumentative? It's so annoying, yet so darn cute!!!